Improvement in rotary engines



I 4 Sheets-Sheet 1'. G. G. HALE.- Rotary Engine.

No. 199,061.- Patented Jan. 8,1878.

' WITNESSES INVENTOR m5. W? i ATTORNEYS MPETERS. FHOTKLLITHOGRAPHER,WASHINGT N. u 0.

4 Sheets-Sheet 2..

G..'O. HALE. Rotary Engine.

No. 199,061. Patented Jan. 8, 1878'.

" ATTORNEYS N. FEIERS. PHOTO UTHOGRAFHER WASH NGTON D c 4 Sheets-Sheet3..

G; C. HALE Rotary Engine.

No. 199,061; Patented Jan. 8,1878..

' INVENTOR 1 Q4/% 7 I: i I ATTORNEYS v 4.shets--she et4; G. G. HALE.Rotary Engine.-

- No. 199,061.- Patented .lan. 3,1872% 4 w fj vmk ATTORNEYS UNITEDSTATES PATENT OFFICE.

GEORGE o. HALE, or KANSAS CITY, MISSOURI, ASSIGNORTO HIMSELF I AND F. 0.WHITE, or SAME PLACE.

IMPROVEMENT IN ROTARY ENGINES.

Specification forming part of Letters Patent No. 199,061, dated January8, 1878; application filed December 6, 1877.

To all whom it may concert:

Be it known. that I, GEORGE O. HALE, of Kansas City, in the county ofJackson and StateofMissoru-i,haveinventedcertainnewand usefulImprovements in Rotary Engines; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to'which it appertains to make and usethe same, reference being had to the accompanying drawings, and toletters of reference marked thereon, which form a part of thisspecification, and in which- Figure 1, Sheet 1, is a verticallongitudinal section of my improved rotary steam-engine. Fig. 2, Sheet2, is a section through the dotted line a: w of Fig. 1. Fig. 3, Sheet 3,is a vertical transverse section of my engine; and Fig. 4, Sheet 4, is aside elevation of the same, with one end of the inclosing cylinder orcase removed.

Oorresponding parts in the several figures are denoted by like letters.

This invention relates to certain improvements in rotary steam-engines;and it consists of the mechanism for opening and closing thepuppet-valves, which admit the steam from the steam-chests into thecylinder; and, secondly, of hinged or swinging pistons, hung in thesteamchests, and moving through the shell of the cylinder which receivesthe steam-pressure that causes them to drive the engine, substantiallyas hereinafter more particulary set forth.

In the annexed drawings, A refers to an outer cylinder or case,supported upon the tubular trunnions cm, cast or otherwise fixed to theinner eccentric cylinder or chamber B, and resting upon legs or supportsa a The cylinder B is provided with exhaust-ports b b for the steam fromthe intermediate cylinder orchamber 0.

D D are the steam-chests, to which steam is admitted by the passages clcl leading from the steam-induction trunnion a.

Steam is admitted from the chests D D to levers f f, fulcrumed in theside of the case A,

It will be seen that as the shoe or cam is 4 alternately rotated incontact with the bars 9 g, or their disks or wheels, the valves e 6will,

in like manner, be opened or closed for the ingress of steam to thechamber 0, to drive the pistons.

By moving the rods 70 in or out, the shoe or cam will be accordinglyaffected, and the lifting-of the valves be varied to regulate thepassage of steam through them.

E E are the pistons, hung in any suitable manner in the steam-chests,and having their right-angular portions passing, steam-tight, throughthe cylinder 0 and into its chamber.

It will be observed that when the piston E is beginning to move awayfrom the eccentriccylinder- B, Fig. 3, the steam in its chest will forceit into the chamber of the cylinder 0 and against the eccentric B, atwhich time the valve 0 will also begin to open and admit steam into thechamber of the cylinder 0 against the face of the said piston, and thuscause it to rotate or drive the engine. Simultaneously with this actionof piston E, the piston E will have passed the first exhaustport b, andthe steam admitted to it in the chamber of the cylinder 0 be partiallyexhausted, and, as the piston E continues to move around toward thepoint where the eccentric and cylinder 0 meet, become entirely exhaustedthrough the other ports I) 1) into the chamber of the eccentric B, andbe allowed to escape through the eduction-trunnion a. The valves closingafter passing the shoe or cam, the admitted steam to the pistons is thusused ex- -pansively the remainder of their stroke.

The pistons E E being held to their seats and against the eccentric B bysteam-pressure, they will take up their own wear, and, by

being pivoted or hung at nearly right angles to the direction in whichthey are acted on by the steam, by which they are subjected tocentrifugal force, they are relieved of friction.

F is a tube, communicating withthe steaminduction passage d, and passingthrough the eccentric B, for the passage of steam through it to theopposite head of said eccentric, to

equalize pressure upon its heads.

The eccentric B is fitted, as at ll, steamtight to the cylinder 0.

Springs on m are fitted to the lever arms or bars g g, to return thevalves 0 e to their seats after the said arms or their rollers havepassed the shoe or cam j.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. In arotary steam-engine, the combination, with its puppet-valves,which admit steam to its pistons, of the levers f f, spring-arms g g,arranged in the steam-passage d d, and the cam or shoe j upon theinduction-trunnion, substantially as and for the purpose set forth.

2. In a rotary steam-engine, the swinging pistons E E, hung in thesteam-chests, and entering the steam-chamber and resting against thestationary eccentric B, in combination with the valves 6 e, operated bysuitable mechanism, substantially as and for the purpose set forth.

3. The combination of the outer cylinder A, inner' cylinder 0, {formin gsteam-chests, stationary eccentric B, valves 0 e and their operatingmechanism, pistons E E, and the induction and eduction trunnions a (1substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I hereunto affix mysignature in presence of two witnesses.

GEORGE G. HALE.

Witnesses:

H. FINNEY, R. W. HILLIKER.

